Question: What drug's dosage is largely carbon?
Paraphrase: What drug is made mostly of carbon?
SPARQL (Wikidata): select ?ent where { ?ent wdt:P31 wd:Q679692 . ?ent wdt:P4250 ?obj . ?ent wdt:P527 wd:Q623 } ORDER BY DESC(?obj)LIMIT 5 
Answer: Siltuximab, Elosulfase alfa, Omalizumab, Vedolizumab, glucagon